CCI Large Pistol Magnum Primers #350

Looking for CCI Large Pistol Magnum primers? The #350 is a true magnum primer, built for heavy charges and large-capacity magnum pistol cartridges that a standard large pistol primer simply can’t ignite as reliably. CCI primers are continuously tested and improved, and today’s formulations are more sensitive, easier to seat, and more compatible with progressive and automated loading equipment than ever before.

Each #350 primer uses a modern, non-corrosive and non-mercuric initiator mix for the cleanest possible burn, helping keep your equipment and brass cleaner between reloading sessions. It’s a strong fit for magnum revolver cartridges like .44 Remington Magnum, .41 Remington Magnum, and .357 Magnum loaded with slower-burning powders that need that extra ignition energy to burn consistently. As always, cross-reference your specific magnum load with CCI’s official reloading data before loading.

If you’re loading standard-pressure large pistol cartridges instead, our CCI Large Pistol Primers #300 is the more economical, everyday choice — the magnum version is worth the step up specifically when your load data calls for it.

With CCI Large Pistol Magnum primers in stock now at Ignite Reload, we’re shipping fast from our Langenburg warehouse to reloaders across Canada, including Fort St. John, Grande Prairie, Thunder Bay, Val-d’Or, Calgary, Edmonton, Winnipeg, and beyond. Browse our full CCI Primers lineup or check out our Smokeless Powder selection too.

1000-count. DOT-regulated HazMat product.